Wireless
charging technology appearing,
The development of wireless charging technology began about 100 years ago by Nikola Tesla. The project, which started with the goal of supplying electricity to everyone through the electric tower's wireless network, was unsuccessful, and even when completed, it lost too much energy to use, so did not attract much attention. The forgotten wireless charging technology has been developed in earnest with the recent commercialization of smartphones. This is because users requested a more convenient way to charge than wired charging.
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| ▲ pixabay.com |
What
kind of methods are there for the wireless charging?
The wireless charging method is divided into frequency, infrared, ultrasonic, and magnetic fields. The frequency has a long transmission distance and enables accurate tracking of the charging target, but has a disadvantage in that it may adversely affect the user's health if a person is exposed to the frequency for a long time. Although the infrared can transmit a large amount of electricity, it cannot penetrate obstacles, and it is difficult to induce infrared rays to the device to be charged. The ultrasonic is harmless because it reflects when it touches the human skin, but its efficiency is low and the electricity is wasted severely. The magnetic field has high electrical transmission efficiency, there is a problem in utilization due to a short transmission distance.
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| ▲ pixabay.com |
Recently, a patent for “Wearable wireless charger and method for generating the electric energy using the same” applied by Samsung was disclosed. According to the patent, a ring-shaped charger with a built-in magnet generates electricity through human body temperature. The generated electricity is transferred to the device through a magnetic field. This charger solves the transmission distance, which was a disadvantage of the magnetic field method, by wearing it on the finger. In addition to the ring shape shown in the patent drawing, it is thought that it can be applied in the form of an accessory that can closely contact the human body.
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| ▲ wipsglobal.com < KR patent, 10-2020-0135140 A > |
Since
Samsung first unveiled its wireless charger at CES2014, they’ve consistently
applied for patents for related technologies. According to a market report, 583
patents related to wireless charging technology applied by Samsung Electronics
in the last 10 years were ranked first in the global rankings. We are looking
forward to seeing what products Samsung will surprise us with.
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